1 files changed, 37 insertions, 4 deletions

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 610573855213..7a7f3a42b2aa 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -195,7 +195,8 @@ MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
  * account when setting it.
  */
 #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
-    defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM)
+    defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) || \
+    defined(CONFIG_ARM64)
 #define	OPT_FRAME_SIZE	(PKT_MAXBUF_SIZE << 16)
 #else
 #define	OPT_FRAME_SIZE	0
@@ -818,6 +819,12 @@ static void fec_enet_bd_init(struct net_device *dev)
 		for (i = 0; i < txq->bd.ring_size; i++) {
 			/* Initialize the BD for every fragment in the page. */
 			bdp->cbd_sc = cpu_to_fec16(0);
+			if (bdp->cbd_bufaddr &&
+			    !IS_TSO_HEADER(txq, fec32_to_cpu(bdp->cbd_bufaddr)))
+				dma_unmap_single(&fep->pdev->dev,
+						 fec32_to_cpu(bdp->cbd_bufaddr),
+						 fec16_to_cpu(bdp->cbd_datlen),
+						 DMA_TO_DEVICE);
 			if (txq->tx_skbuff[i]) {
 				dev_kfree_skb_any(txq->tx_skbuff[i]);
 				txq->tx_skbuff[i] = NULL;
@@ -1862,6 +1869,8 @@ static int fec_enet_clk_enable(struct net_device *ndev, bool enable)
 		ret = clk_prepare_enable(fep->clk_ref);
 		if (ret)
 			goto failed_clk_ref;
+
+		phy_reset_after_clk_enable(ndev->phydev);
 	} else {
 		clk_disable_unprepare(fep->clk_ahb);
 		clk_disable_unprepare(fep->clk_enet_out);
@@ -2101,7 +2110,8 @@ static int fec_enet_get_regs_len(struct net_device *ndev)
 
 /* List of registers that can be safety be read to dump them with ethtool */
 #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
-	defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM)
+	defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) || \
+	defined(CONFIG_ARM64)
 static u32 fec_enet_register_offset[] = {
 	FEC_IEVENT, FEC_IMASK, FEC_R_DES_ACTIVE_0, FEC_X_DES_ACTIVE_0,
 	FEC_ECNTRL, FEC_MII_DATA, FEC_MII_SPEED, FEC_MIB_CTRLSTAT, FEC_R_CNTRL,
@@ -2834,6 +2844,7 @@ fec_enet_open(struct net_device *ndev)
 {
 	struct fec_enet_private *fep = netdev_priv(ndev);
 	int ret;
+	bool reset_again;
 
 	ret = pm_runtime_get_sync(&fep->pdev->dev);
 	if (ret < 0)
@@ -2844,6 +2855,17 @@ fec_enet_open(struct net_device *ndev)
 	if (ret)
 		goto clk_enable;
 
+	/* During the first fec_enet_open call the PHY isn't probed at this
+	 * point. Therefore the phy_reset_after_clk_enable() call within
+	 * fec_enet_clk_enable() fails. As we need this reset in order to be
+	 * sure the PHY is working correctly we check if we need to reset again
+	 * later when the PHY is probed
+	 */
+	if (ndev->phydev && ndev->phydev->drv)
+		reset_again = false;
+	else
+		reset_again = true;
+
 	/* I should reset the ring buffers here, but I don't yet know
 	 * a simple way to do that.
 	 */
@@ -2860,6 +2882,12 @@ fec_enet_open(struct net_device *ndev)
 	if (ret)
 		goto err_enet_mii_probe;
 
+	/* Call phy_reset_after_clk_enable() again if it failed during
+	 * phy_reset_after_clk_enable() before because the PHY wasn't probed.
+	 */
+	if (reset_again)
+		phy_reset_after_clk_enable(ndev->phydev);
+
 	if (fep->quirks & FEC_QUIRK_ERR006687)
 		imx6q_cpuidle_fec_irqs_used();
 
@@ -3113,7 +3141,7 @@ static int fec_enet_init(struct net_device *ndev)
 	unsigned dsize_log2 = __fls(dsize);
 
 	WARN_ON(dsize != (1 << dsize_log2));
-#if defined(CONFIG_ARM)
+#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
 	fep->rx_align = 0xf;
 	fep->tx_align = 0xf;
 #else
@@ -3463,6 +3491,10 @@ fec_probe(struct platform_device *pdev)
 			goto failed_regulator;
 		}
 	} else {
+		if (PTR_ERR(fep->reg_phy) == -EPROBE_DEFER) {
+			ret = -EPROBE_DEFER;
+			goto failed_regulator;
+		}
 		fep->reg_phy = NULL;
 	}
 
@@ -3546,8 +3578,9 @@ failed_clk_ipg:
 failed_clk:
 	if (of_phy_is_fixed_link(np))
 		of_phy_deregister_fixed_link(np);
-failed_phy:
 	of_node_put(phy_node);
+failed_phy:
+	dev_id--;
 failed_ioremap:
 	free_netdev(ndev);